types of lamps

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Across
  1. 3. a transparent electric lamp containing a viscous liquid in which a brightly coloured waxy substance is suspended, rising and falling in irregular and constantly changing shapes
  2. 4. a visual signaling device for optical communication, typically using Morse code.
  3. 6. a lamp using a filament surrounded by the vapour of iodine
  4. 7. a lamp that disperses scented alcohol using a heated stone attached to a cotton wick
  5. 8. a miniature gas discharge lamp
  6. 9. a special lamp that has movable parts to expose or block out its light so it can be turned "on" or "off" while its power physically remains on
  7. 11. simple lamps that produce and burn acetylene which is created by the reaction of calcium carbide with water
Down
  1. 1. a mixture of various noble gases with a high-voltage electrode in the center of the container
  2. 2. a low-pressure mercury-vapor gas-discharge lamp that uses fluorescence to produce visible light
  3. 5. The lamp operates on electricity from batteries, charged through the use of solar photovoltaic panel.
  4. 10. Also known as diffusers that are used to diffuse essential oils in aromatherapy and esoterics